You get into the airport and it’s a little chilly, but it’s okay because you’re moving around a lot, spraying perfume testers and trying to find something to eat that doesn’t cost £3000 and your firstborn child.

Then you get on the plane and take your seat. It’s pretty warm on the tarmac, so you settle down and feel kind of cosy. As cosy as you can feel with no leg room and a stranger heavy breathing next to you.

But then the plane takes off. The air con turns on. And hell freezes over.

It is cold. It is so frickin’ cold.

Has she fainted or is she sleeping? Nobody knows (Picture: Getty)

As you frantically press the call button to try and get hold of a scratchy airline blanket to cover your goosepimpled limbs, you wonder, ‘Why? Why is it so damn cold on here? Can’t they just turn the heating up?’

Well, no. No they can’t.

And it’s for your own safety.

A study by ASTM International found that humans are more likely to faint on planes than on the ground due to hypoxia, which is a condition that’s actually really common with airline passengers, where they pass out because their body isn’t getting enough oxygen.

According to the study, ‘airline passengers may become considerably hypoxic due to reduced pulmonary ventilation caused by immobility, drowsiness, and gastro-intestinal distension.’